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Hypertext Transfer Protocol (Http) Digest Authentication Using Authentication and Key Agreement (Aka)

By Niemi, A.

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Book Id: WPLBN0000693359
Format Type: PDF eBook
File Size: 38.03 KB.
Reproduction Date: 2005
Full Text

Title: Hypertext Transfer Protocol (Http) Digest Authentication Using Authentication and Key Agreement (Aka)  
Author: Niemi, A.
Volume:
Language: English
Subject: Information and Communication, Reference Collection, Language
Collections: Technical eBooks Collection
Historic
Publication Date:
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Niemi, A. (n.d.). Hypertext Transfer Protocol (Http) Digest Authentication Using Authentication and Key Agreement (Aka). Retrieved from http://community.worldlibrary.net/


Description
Technical Reference Publication

Excerpt
Excerpt: The Hypertext Transfer Protocol (HTTP) Authentication Framework, described in RFC 2617 [2], includes two authentication schemes: Basic and Digest. Both schemes employ a shared secret based mechanism for access authentication. The Basic scheme is inherently insecure in that it transmits user credentials in plain text. The Digest scheme improves security by hiding user credentials with cryptographic hashes, and additionally by providing limited message integrity. The Authentication and Key Agreement (AKA) [6] mechanism performs authentication and session key distribution in Universal Mobile Telecommunications System (UMTS) networks. AKA is a challengeresponse based mechanism that uses symmetric cryptography. AKA is typically run in a UMTS IM Services Identity Module (ISIM), which resides on a smart card like device that also provides tamper resistant storage of shared secrets.

Table of Contents
Table of Contents 1. Introduction and Motivation . . . . . . . . . . . . . . . . . 2 1.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. AKA Mechanism Overview . . . . . . . . . . . . . . . . . . . . 4 3. Specification of Digest AKA . . . . . . . . . . . . . . . . . 5 3.1 Algorithm Directive . . . . . . . . . . . . . . . . . . . . . 5 3.2 Creating a Challenge . . . . . . . . . . . . . . . . . . . . . 6 3.3 Client Authentication . . . . . . . . . . . . . . . . . . . . 7 3.4 Synchronization Failure . . . . . . . . . . . . . . . . . . . 7 3.5 Server Authentication . . . . . . . . . . . . . . . . . . . . 8 4. Example Digest AKA Operation . . . . . . . . . . . . . . . . . 8 5. Security Considerations . . . . . . . . . . . . . . . . . . . 12 5.1 Authentication of Clients using Digest AKA . . . . . . . . . . 13 5.2 Limited Use of Nonce Values . . . . . . . . . . . . . . . . . 13 5.3 Multiple Authentication Schemes and Algorithms . . . . . . . . 14 5.4 Online Dictionary Attacks . . . . . . . . . . . . . . . . . . 14 5.5 Session Protection . . . . . . . . . . . . . . . . . . . . . . 14 5.6 Replay Protection . . . . . . . . . . . . . . . . . . . . . . 15 5.7 Improvements to AKA Security . . . . . . . . . . . . . . . . . 15 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15 6.1 Registration Template . . . . . . . . . . . . . . . . . . . . 16 Normative References . . . . . . . . . . . . . . . . . . . . . 16 Informative References . . . . . . . . . . . . . . . . . . . . 16 A. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 17 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 17 Full Copyright Statement . . . . . . . . . . . . . . . . . . . 18

 

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